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SPY. One who goes into a place for the purpose of ascertaining the best way of doing an injury there.
     2. The term is mostly applied to an enemy who comes into the camp for the purpose of ascertaining its situation in order to make an attack upon it. The punishment for, this crime is death. See Articles of War, 1 Story's Laws U. S. 992; Vattel, Droit des Gens. liv. 3, Sec. 179.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
In 1992, a team of civilian environmental scientists was paired with CIA officials in an unprecedented, and controversial, task force, whose work has sought to answer the question: Can America's Cold War apparatus of high-tech spy gear--satellites, planes, ships, submarines--be mobilized to track a new enemy: the degradation of the environment?
The newly created spy organisation recruits a female spy lead, Vera Atkins (Stana Katic), who further hires two unusual candidates: Virginia Hall (Sarah Meghan Thomas), an ambitious American with a wooden leg, and an Indian Noor Inayat Khan (Radhika Apte), a Muslim pacifist.
Shakil Afridi's and Jadhav's fates might very well resemble that of Rudolf Abel, a Soviet spy captured by the FBI.
Will be asked to explain his position on views attributed to him in book 'Spy Chronicles'.
Rabbani further lashed out saying that had a civilian or a politician teamed up with a counterpart to write a book similar to Dulat and Durrani's Spy Chronicles: RAW, ISI and the Illusion of Peace then there would have been a 'hue and cry'.
The book has been making headlines this week even before it hits shelves and is the first-ever effort by two former chiefs of rival spy agencies to jointly write a book.
Please understand me that we spy the future well ahead of time, so we can get down to give it what it takes.
Pakistan authorities had arrested an Indian spy Kulbhushan Yadav in March of 2016 involved in spying agencies in Balochistan.
The evolution of espionage is a topic every spy movie speculates upon and every science fiction reader adores.
A number of reports over the years have also said Israel has spied on the United States, even after Israeli spy Jonathan Pollard was caught and convicted.
We tend to think that spying mostly is done by national spy organizations like the National Security Agency, FSB, Chinese spying services, and others.